Toyota Corolla Cross: Hybrid/EV Battery ECU Multiple Reset (P1AFF00)
Toyota Corolla Cross (2022-2025) Service Manual / Engine & Hybrid System / Hybrid / Battery Control / Hybrid Battery System / Hybrid/EV Battery ECU Multiple Reset (P1AFF00)
DESCRIPTION
The battery ECU assembly monitors its internal operation and will store these DTCs when it detects an internal malfunction.
|
DTC No. | Detection Item |
DTC Detection Condition |
Trouble Area | MIL |
Warning Indicate | Note |
|---|---|---|---|---|---|---|
|
P1AFF00 | Hybrid/EV Battery ECU Multiple Reset |
ECU internal malfunction (1 trip detection logic) |
Battery ECU assembly |
Does not come on | Master Warning: Comes on | SAE Code: P1AFF |
CONFIRMATION DRIVING PATTERN
HINT:
After repair has been completed, clear the DTC and then check that the vehicle has returned to normal by performing the following All Readiness check procedure.
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- Connect the GTS to the DLC3.
- Turn the ignition switch to ON and turn the GTS on.
- Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
- Turn the ignition switch off and wait for 3 hours or more.
- Turn the ignition switch to ON and turn the GTS on.
- With ignition switch ON and wait for 3 seconds or more.
- Enter the following menus: Powertrain / HV Battery / Utility / All Readiness.
- Check the DTC judgment result.
HINT:
- If the judgment result shows NORMAL, the system is normal.
- If the judgment result shows ABNORMAL, the system has a malfunction.
- If the judgment result shows INCOMPLETE, perform driving pattern again.
PROCEDURE
|
1. | REPLACE BATTERY ECU ASSEMBLY |
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